As much as possible Chess.com tries to follow standard OTB rules. What do you think would happen in a tournament if you suddenly whipped out a little magnetic set and started moving pieces around? If you want to be able to legally do that, then play Daily games (correspondence).
Would you consider this unfair?
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Apr 14, 2021
0
#3
If you want to legally do something like that, I suggest drawing arrows. Although it doesn’t exist in OTB, it is much better than whipping out a magnetic board
Apr 14, 2021
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#4
I have never experimented with arrows. I assume that these are not visible to your opponent.
Even that feels as though it is as unfair as using your fingers over the board that few opponents would tolerate 
canadian_rt wrote:
If you want to legally do something like that, I suggest drawing arrows. Although it doesn’t exist in OTB, it is much better than whipping out a magnetic board
How could drawing arrows not be considered an artificial aid and therefore illegal?
Apr 14, 2021
0
#6
Try and practice not drawing arrows when you play online to prepare yourself for not being able to OTB. If you find it easier to imagine the board as the chess.com board, then do just that - close your eyes, lean back and visualise your OTB position on a chess.com online board. Best of luck
I started playing chess online for the first time after almost a year of pandemic to keep in shape for when OTB chess returns. So far, I have played almost exclusively 15|10 and my grade has found its natural level.
I am soon going to increase this to 30 minutes to try to improve at which time, there would be time to play on a proper board which I greatly prefer.
I would never use computer assistance but I am not sure if I would be able to resist moving the pieces around for a 'clearer view' of the position four or five moves into a variation. This would be a bad habit because you wouldn't be able to touch anything in a real game... but would you consider this cheating?